Ares Expedition - Crisis: Terraforming Mars

Ares Expedition: Crisis is a brand new game mode that uses the mechanics of the original Terraforming Mars: Ares Expedition in a challenging new way. Play it solo, or band together with up to three friends to work together to save Martian society after a catastrophic asteroid collision has taken out nearly all of your infrastructure. In Crisis Mode, the planet is already terraformed, but ongoing fallout from the impact is dropping temperatures, de-oxygenating the planet, and freezing over oceans, and there's no time to evacuate the entire global population. You must work fast, completing projects to counteract the ongoing crises and re-terraforming the planet before it becomes uninhabitable...with billions of people still on it.